Vacuum cleaner



1,498,790 E. R. FIELD VACUUM- CLEANER June 24 1924.

Original Filed March 5. 1921 3 fwi m mzymm aennar tPteim axrrnnn, ornnrnor'r, ICHIGAN. assrervoa To an a vacuum onna r: COMPANY, ornn'raorr, mrcmean, A. coaro'rron or MICHIGAN.

vacuum can To all whom it may concern:

' Be it known that I, EGBERT F ELD, 'a citizen of the United StatesofAmerica,

residing at Detroit, in the county of Wayne and stated Michigan, haveinvented certain new and useful Improvements in Vacspecification,reference being had therein to the accompanying drawings.

The invention relates to vacuum cleaning apparatus and refers moreparticularly to the portable type which is provided with a suction tooldirectly connected to the fan casing. v 2

The invention has for its object to provide an accurately balancedconstruction of fan to avoid vibration; and to provide a fan havinga-central portion into which the air is drawn through the registeringinlet opening in the casing and which presents a large clearance so thatcomparatively large ob-. jects may be properly drawn through the fancasing. The invention-has for other objects the novel features ofconstruction the fan casing.

and combinations and arrangements of parts as more fully hereinafter setforth. In the drawings 4 1 Figure 1 is a vertical central'section,partly in elevation, through a portion of a vacuum cleaner embodying myinvention;

Figure 2 is a front elevation of, the fan; Figure 3 is a perspectiveview thereof. This application is a division of my copending applicationSeriaPNo. 449,779'fi1ed March 5, 1921, upon vacuum cleaner.

The vacuum cleaner has the motor-casing 1 the fan casin 2,] and thesuction tool 3. The suction tool as the cap 4 which is pivotallyconnected at its lower part to the fan casing 2 by the pin 5 engaging incooperating brackets -6 and 7 respectively upon the fan casing and cap,the arrangement being such that'the SIICtlQIltOOl may be swung down topermit o'f'engagement of another suction tool over" the nipple 8extending axially outward from the fancasing 2. To

detachably hold the capl t against the fan casing, there is a suita efastener 9 upon It is very bration'as well as striking of the fanagainst shown my fan 10 is formed 7 havean accurately" bal nced,construction of fan to avoid vicomprises the central cir ner edges arepreferably inclined toward the arms and terminate near the points ofintersectlon of the arms, so that a very large clearance space issecured in the fan in registration with the nipple 8. The'outer ends ofthe flanges are preferably curved as at 14. This fan is preferablyformed of a stamping and to reinforce the radial arms 12 they arelongitudinally corrugated. The fan is tempered to make the sameresilient as well as strong, so that upon striking an obstruction theparts may yield and after passing the obstruction will resume theirnormal positions. 7

The hub of the fan has the enlarged portion 15 abutting the outer sideof the web I 11 and the portion 16 of reduced diameter extending throughthe web. To secure this .hub to the web, the portion 16 has its outer.surface upset inwardlyto form the integral flange 17 abuttin the innerface of the web. The fan is keye uponthe motor shaft '18 and is securedfrom outward longitudinal movement by the screw 19 overlapping the outerend of the hub 13 and threadedly engaging in the outer end of the shaft18.

.- From the above description, it will be seen that my fan, being ofone-piece construction is simple, and furthermore, is

more accurately balanced than those formed of a number of pieces, due tothe fact that the thicknesses of the material formmg the difierentpieces of a fan vary. In the resent instance, this thickness of material1s the same throughout since the blank is of comparatively smallrarea.Furthermore, by havin the air impelling flanges formed with t eir innerinclined edges terminating at the points of intersection of the arms,the maximum amount of clearance 1n the ,fan is obtained registering withthe inlet nipple so that any bulky articles being drawn up throughthesuction tool wil readil pass through'the fan and its'casing into e dustbag. Another very important 2 @flginal' application filed March 5,,1921, Serial No. 449,779. Divided. andthis application filed June $7,

I 1921. Serial. no. team.

consideration is that the parts of the fan may yield upon striking someobstruction and after passing the same, return to their originalpositions, vthis being due to the fact that the an is tempered and alsomade of one piece.

l ihat ll claim as my invention is 1. In a vacuum cleaner, thecombination with a tan casing and an axial inlet open ing, of a fanwithin said casing comprising a web in substantial registration withsaid inlet opening, radial arms extending from said web, and transverseflanges extending longitudinally of said arms, said transverse flangesextending across the fan casing and terminating short of one wall thereof, the inner edges of said transverse flanges being inclined toward thearms and terminating near the points of intersection of the arms wherebya relatively large clearance space is provided in the fan inregistration with the inlet opening.

2. A fan for vacuum cleaners and the like comprising a hub, a welomounted on the huh, radially extending arms projecb one piece of lightgauge tempered metal whereby the flanges will return to normal positionafter striking an obstruction.

3. fan for vacuum cleaners and the like comprising a hub, a web mountedon the hub, radially extending arms projecting from the web, andradially extending flanges projecting freely laterally n said armswhereby said flanges are free to yield when striking an obstruction, theflanges, arms and web being formed from one piece of light gau etempered metal whereby the flanges will return to normal position afterstriking an obstruction.

in testimony whereof I aliix my signature 1 EGBERT R. FIELD

